add descriptions to commands

src/plone.server/plone/server/commands/__init__.py

@@ -14,6 +14,8 @@
 
 class Command(object):
 
+    description = ''
+
     def __init__(self):
         self.request = FakeRequest()
         self.request.security.add(TestParticipation(self.request))
@@ -42,7 +44,7 @@ def __init__(self):
         self.run(arguments, settings, app)
 
     def get_parser(self):
-        parser = argparse.ArgumentParser()
+        parser = argparse.ArgumentParser(description=self.description)
         parser.add_argument('-c', '--configuration',
                             default='config.json', help='Configuration file')
         parser.add_argument('--debug', dest='debug', action='store_true',

src/plone.server/plone/server/commands/cli.py

@@ -19,6 +19,7 @@ def format_headers(headers):
 
 
 class CliCommand(Command):
+    description = 'Plone server CLI utility'
 
     def get_parser(self):
         parser = super(CliCommand, self).get_parser()

src/plone.server/plone/server/commands/migrate.py

@@ -17,6 +17,7 @@ def traverse_to_path(app, path):
 
 
 class MigrateCommand(Command):
+    description = 'Plone server migration utility'
 
     def get_parser(self):
         parser = super(MigrateCommand, self).get_parser()

src/plone.server/plone/server/commands/server.py

@@ -3,6 +3,7 @@
 
 
 class ServerCommand(Command):
+    description = 'Plone server runner'
 
     def run(self, arguments, settings, app):
         web.run_app(app, port=settings['address'])

src/plone.server/plone/server/commands/shell.py

@@ -7,6 +7,7 @@
 
 
 class ShellCommand(Command):
+    description = 'Plone server shell'
 
     def run(self, arguments, settings, app):
         app_settings['root_user']['password'] = TESTING_SETTINGS['root_user']['password']